These billboards will target you as you drive by

By early fall, a billboard in Tokyo will automatically identify the make and model of vehicles driving by it to display a targeted advertisement. "The ad could come up with'Hey you in the Mercedes, you could be driving this [instead],'" said Paul Turner, chief marketing officer with Cloudian, which is working with the Japanese company Dentsu on the project. A camera on the billboard will look hundreds of meters down the expressway to identify vehicles and present a corresponding ad for about five seconds. By targeting ads to specific types of vehicles, the companies should be able to charge a higher rate to advertisers. Highly-targeted ads are the norm while we browse the web and use apps, but such approaches have not largely entered the broader world yet.